Yeah, if Toyota have any sense they'll look at the new Civic Type-R and pitch it towards that price
How much would I be willing to pay for one though? Difficult to say.
Looking around, even the cheapest cars here are still around the RRP so I shouldn't take much of a hit. The dealers here rarely have them in so I imagine the trade-in would be good, but even so let's say they only give me €34k for it.
If the Evo is €45k then that's €11k to fund. Still an extra few hundred a month if you have to finance it, and at probably peak interest rates too.
If it's a keeper then over time that becomes irrelevant (look at TME values compared to vanilla VIs), but shorter term that money would be better spent on Öhlins, MoTeC etc. and you'd have a "better" car, just one that wasn't as valuable.