I have both issues, I have not enough cash and want too many coins.
After some sage advice from our own @UPINSMOKE I'm only buying what is really worth buying inside my budget, so the money I do have is growing, and with it, the option of better is becoming far more realistic.
No point in buying things only to wish you'd done it better in the first place! (and not having the hassle of re-sale and fees taking what meagre gains you did make away again)
Happy buying, Craig!