I have to say, speaking as someone who's been there, done that for several years, I agree totally with arawnsley/lmj - the RISC OS games market went down the pan years ago.
That said, I *do* have a small number of games projects either in the early stages of development or simply at the planning stage - but due to my hectic schedule of a) (paid)work and b) trying to have a life, it's literally a case of 5 minutes work here, 5 minutes work there - not to mention that when time does actually permit, I'm more inclined to work on WebChange anyway - so progress is slow enough to make a snail's pace look rather hasty. The incentive to prioritise on the games just isn't there - I know damned well that if/when they are completed and on sale (which will be at a budget price, obviously - that's my ball, man), I *will* make a loss based on development time.
To develop a 'full price' and substantial (to make that full price fair and reasonable) game from scratch, it will take more than £2000-£3000 if you want the level of sophistication and decent graphic design, and sound/music, etc - because you would be talking about a team of programmers/designers, and several months work at the very least. For me, because I'm cheaper than most (I'm a veritable bargain, but that's also why I'm always so damned busy!), £3000 (plus VAT!) would enable me to commit to two, maybe three, solid months work on that one project (in theory - in practice I have too many long term work commitments to be able to work solidly on one project). That would definitely enable me to finish one of my games - and possibly even make headway into another - but these are /budget/ titles, being developed by a lone developer.
If I decided to live off my savings for the duration, there is absolutely no way I would recoup that money in revenue. I'm looking at a £5 (inc VAT) price point - to recover £3000, I'd actually have to sell just over 700 copies. Just to break even. In the RISC OS market, that simply wouldn't happen.
I've rambled a bit, but I think the relevant points are all covered.