Prosaria
Built for the hobby.Run as a business.
Prosaria builds and operates specialist hobby retail businesses, combining community knowledge with disciplined buying, stock control and ecommerce.
Hobby Retail
Cards, figures, Gunpla, collectibles
Operators
We run the business ourselves
Disciplined
Buying, margin and stock turn
Long Term
Built to trade, not to flip
The market
Specialist hobby retail.
Trading cards, anime figures, Gundam and Gunpla kits, collectibles, accessories and the games that sit alongside them. Sold in shops, online and at events, to customers who know exactly what they are looking at.

Illustrative imagery
Our approach
Invest. Improve. Build.

01
Invest
We acquire and invest in established specialist hobby retailers: trading cards, anime figures, Gundam and Gunpla, collectibles, accessories and the games that sit alongside them.

02
Improve
We work on what actually moves the numbers. Sourcing and purchasing discipline, stock turnover, margin, listing quality across ecommerce and marketplaces, supplier relationships and the daily running of the business.
03
Build
The objective is a durable retail business with repeat customers and a real community around it. We are building something that trades profitably, not a collection held in the hope it appreciates.
What we look for
One market. Disciplined on fundamentals.
We look at specialist hobby retail and the businesses that supply or support it. Within that market, the fundamentals matter more than the category.
Established revenue and genuine repeat customers
Stock that turns, bought at the right price
A customer community that trusts the business
Supplier and distributor relationships worth keeping
Room to improve ecommerce, listings and fulfilment
An owner considering succession or a change of direction
Our retail brand
Mum Where’s My Cards.
Prosaria is the corporate side of the business. It owns and operates, allocates capital and handles acquisitions.
Mum Where’s My Cards is the brand customers buy from: trading cards, anime figures, Gundam and Gunpla kits, collectibles, accessories and related board games.
The brand is building out its retail range and supply channels, selling through ecommerce and marketplaces, with shows and events alongside.
A different kind of buyer
Built by owners. Understood as such.
Most good hobby shops were built by someone who knew the product, looked after their regulars and earned their supplier relationships the slow way.
We approach those situations directly and practically, as people who intend to run the business rather than resell it.
Where there is a fit, we aim to understand what the owner wants, agree a sensible transaction and keep what works while improving what does not.

Nathan Powell
Founder, Prosaria
The business
Long-term thinking. Practical execution.
Retail rewards the unglamorous things: buying well, holding the right stock, turning it, listing it properly and looking after the customers who come back.
That is where we put our capital and our attention. Nathan Powell runs Prosaria. When you get in touch, you speak to the person doing the work.
Have a business worth discussing?
Whether you are thinking about selling, winding down or handing over a hobby retail business, or you supply this market and want to talk, speak with us directly.