G13 is a 9 years old gamepad so sometimes you can find it at a fair price on Ebay or Amazon. I got mine for 70€ Amazon.es, but is kinda hard to find now.
Razer new models are The Targarus Classic (the new Nostromo) 80$, Targarus V2 90$ and OrbWeaver Chroma 150$.
There are cheaper ones too;
-Magical Led Computer Gaming Keyboard - Globalama GK0001 - 30$
-XFUNY Wired Gaming Keyboard 46-Key Professional Single handed Gaming Keyboard - 28$
-RGB LED Backlit SADES Portable Mini Gaming Keypad - 23$
Im sure they are fun to use.
https://www.amazon.com/s/ref=nb_sb_n...Agaming+keypad
As a gaming mouse I have a 12 Programmable Thumb Buttons old Razer Naga. Not very durable ^^ Its my second one since I got them cheap.