I honestly have no idea how the market is in the UK.
In the US it's oversaturated and unless you're a big name breeder or selling at a huge cut you may get stuck with them for a bit.
Another factor is how you're looking to produce them.
2026 isn't very far...and plans don't always work out. If you purchase a hatchling female now she still may not be guaranteed to go. Or adult females can skip. I have 2 large adult girls I picked up last year...neither of them produced any eggs last year or this year. One of them I was really looking forward to as well. She reabsorbed.
If you're producing a lot of triple hets or single gene recessive double hets it can be tough. If you can guarantee double recessives with the last het that's much easier to place I would think.
But you never know.... I recently sold a simple bumblebee in a week buy listing her 40% cheaper than most. So trying to hit that money goal may be tough.
Do it because you love it and it's much easier. Money makes it tough.