Cheaper alternative for pressure gauge?

Geminisq

Well-known member
May 23, 2021
111
LargoFL
Pool Size
8400
Surface
Vinyl
Chlorine
Liquid Chlorine
The pressure gauge stopped working after the previous pool collapsed. Do I have to buy a name brand for my Sta-Rite Posi Clear cartridge filter? This is what I found and it seems ridiculously expensive:
Thanks in advance!