Good gaming mouse & keyboard

Looking for some gaming gear. I don't intend to spend too much on these, maybe maximum would be about $25 each. If you can help that would be great. One more thing- I have a Logitech G500 mouse in my list and I just wanted to get some opinions but I also want to buy a keyboard. I have a spare keyboard but it's the one that came with the old dinosaur Windows XP and I would really like to get another one. So to fit into my budget of $550 (my other hardware adds up to $500) I would like to get mouse/keyboard for $25 each. Thanks!

PS- If you're curious, heres my build...

Get a Logitech G400. It has a better sensor ans just the right weight (as opposed to G500 being way too heavy).

But you can adjust the weight in the G500 with the little weights.

It's too heavy even without them

KK I switched it out for the G400. Thanks!

Cyborg v5 KB and keep g500