About us
About us
Founded in the bustling heart of New York City in 2009, Presto-Changeo emerged as a boutique ecommerce agency committed to crafting exceptional, high-performance modules and apps to enhance ecommerce experiences globally. Together with our full-service design and development partner, EIP Concepts CA, Inc., we've cultivated a rich tapestry of expertise in all facets of ecommerce. Now based in California, we pride ourselves on our long-standing history, global reach, and trust that we've fostered with our clients over the years. Entrust us with your ecommerce needs, and we'll transform them into solutions that drive productivity, enrich features, and elevate your online shop to new heights.
What we do
PrestaShop was where our journey began, developing dynamic modules, crafting bespoke websites, and actively supporting the PrestaShop community in its forums. Our founder and lead developer, Tomer (tomerg3), not only moderated these forums but also contributed to the technical review of "PrestaShop 1.3 Beginner's Guide" by Packt Publishing.
After a transformative 12 years committed to PrestaShop, we have pivoted towards SaaS (Software as a Service) with the Wix platform. This transition allows us to simplify app usage, streamline installations, facilitate updates, and provide tools to enhance your Wix site, enabling seamless third-party service integrations and leveraging proven methods to boost sales.
Our expert design and development team, operating under the EIP Concepts CA, Inc. banner, is adept at crafting tailored solutions to cater to your specific ecommerce needs. From creating distinct B2B sites to hyper-local shops with precision targeting, we've done it all.
Our philosophy is simple: to build a company we ourselves would love to collaborate with. We strive not only to meet your expectations but to consistently exceed them, with exceptional customer support, stunning user experiences, and top-tier quality work.
What sets us apart? Our unrivaled, top-quality apps and a US-based customer service team that goes above and beyond to ensure your satisfaction. Trust us with your ecommerce journey, and we'll turn it into an exceptional success story.
Highest quality apps & US based customer service set us apart!
Meet our team

Tomer Grassiani
Founder, Tomer's background was in Machine Translation / AI with 10 years at Meaningful Machines, before transitioning to E-commerce and starting PoCo. He's an avid rock climber and a pool shark.
Suren Mikaelyan
Head of Development, Suren studied physics for 6 years but found his passion in web development. PoCo can’t “get rid of him” for more than 8 years. He enjoys hiking but sometimes can’t find the road back.
Vahe Babayan
Senior Developer, Vahe thought he would be a microchip engineer, but soon he fell in love with web development. He started to work for PoCo ages ago and thinks it's only the beginning. Vahe’s biggest dream is to learn to play a piano but he’s just too lazy for that.
Asya Vardanyan
Junior Developer, Asya recently got her degree in computer science and now building her career at PoCo. She has a lot of fun with drawing and addicted to movies..
See what others have to say
about us on the Wix Marketplace.

“The product is pretty straight-forward. There are some quirks in the way it interacts with products that have variants that was driving us a bit crazy until we reached out for help. We reached out on a Sunday and weren't expecting to hear anything but got a reply with in the hour! After a bit of back and forth Tomar helped walk us through what we were doing incorrectly and even provided videos he created just to show us how we should set everything up. Al I can say is WOW! I only wish this level of support was available with all of the Wix apps we've used.”
— Tkboston

“I had a couple of issues at start, but they provided an amazing support and help to make it works. It does exactly what I should do and it’s a huge time and error saver to manage the bundles.”
— Lemarchedessavons

“Before i start, I want you to know that this is an honest review. No bull crap. When I first downloaded the app to my store, I didn't realise I could not import Australian specific reviews for my Australian store. However, there were other countries available. I contacted the STAMPED support team and they added Australia there for me and even more amazing, they did all the same day. OMGGG!! They literally made my night. Highly recommended. ”
— Buddyfavourites

“We're using the advanced plan, Tomer from Presto-Changeo has been beyond helpful in working with us to make sure we get the data we need from Wix to Klaviyo. Amazing customer service, we're super happy and now ready to take over the world with Klaviyo.”
— Mccallumbrooke

“This is a great App and really easy to use! I would like it even more if there were a few more customisable options. It would be really handy if you could position where it said how many you have in stock. But other than that its a really great app.”
— Abuckenham

“J'ai perdu beaucoup de temps à installer des applications qui ne fonctionnaient pas bien. C'est tellement plus facile depuis que je suis avec Stamped. J'espère que la version gratuite va continuer a bien fonctionné. Merci ! Isabelle”
— Creationgli

“Absolutely love the Stamped app!!!!!! After converting from Shopify to Wix, it was hard finding apps that offered the same functionality as my old store until I decided to give Stamped a shot. After communicating with some of the amazing customer service reps and spending some time learning the app, I am highly pleased!!! I actually like it better than the app I was using on my old store. You guys are the best!!!!!”
— Reveremenscare

“Before this app I was having trouble placing embedded Klaviyo forms in the footer of my Wix site. Not only did this app have the answer to my issues, but the team a PoCo walked me through installing it and making sure my forms work! Highly recommended.”
— Mic1188
100% Satisfaction Guaranteed!
We stand by all our apps as well as our customer support, and we're committed to making sure that each of our apps work correctly for every customer. If for any reason you are unhappy with an app, if you misunderstood what it does, or simply have a case of buyer's remorse, contact us and we'll gladly issue a refund.