Ok tight budgets call for drastic approaches.
That outer thin layer seems to be coming off pretty cleanly leaving quite a solid smooth exterior. Try gently removing the rest using a wide scraper & see whats left. If it looks good you may need to slightly further rebate the striker section but maybe there is enough rebate left.
It is amazing with cabs no matter how bad they look if you are prepared to put in the time they are often recoverable. Ok to the purists the cab may end up 1/32 shorter in length but to me no prob.
A further alternative is to shed the remainder of the outer layer as above and apply with wood glue an outer layer of the thinnest timber material you can acquire & jigsaw the coin slots & shooter holes, use a router for the striker rebate & a circular saw to get the side edges at 45deg.
Not a perfectionists approach but you did say you are on a tight budget.