That's a tough comment to answer. It's true that for some series there was a "glory day" when a lot of inventory came onto the market and went relatively cheaply, and a good collection could be put together on a shoestring. (But A+ stuff, even for CCS, always went high.) And it's true that the supply has gotten notably thinner, and with more people collecting, competition has picked up. For my most desired series, I now routinely expect a battle, and lose more often than I win.
On the other hand, patience is getting to be more and more an asset. The nice thing about losing an auction is that you get to keep all your money, and you force the other bidder to pay your whole bid plus two bits. (Yeah but I know ---

) It's part of the hunt, and if you lose an auction you still live and keep all your weapons to bid again.
And I've always said that the first thing a collector needs to acquire is good taste. If that's the motivation for what you go after, and not just snapping up second- and third-rate images just to have something from "that" series, then your collection may be small, but you can be proud of everything you own. Golly, you've got Hitomi Kato's roughs from the "kissy" part of the Tennimon OP sequence! and some great Pokémon cels like
this one. And I know how competitive Poké-llectors can be at auction time.
I'd say keep the faith, and if no opportunity to spend your budget comes this week (or if

drat it you lose the auction
again) then put that sum into your bidwar ammo box and add next week's budget to it. You still won't be filthy rich (heck, I never have been or ever will be) but your power level will keep rising while your lucky opponent's will sink. And if you're canny and patient, you'll catch Mr. Gautroques napping some week and add one very nice prize to your gallery. And if you do this slowly but surely, your collection will stay modest, focused, and very high in quality. (And don't ignore the chances that gallery offers provide!)
You will grow in evil power and be proud of that too!