We got married when we were young and totally poor. I'd do it all again.
We didn't have money for proper rings. We bought two simple bands, but we got what we really wanted later. Two thick bands in 18 karat gold from Birks. I wanted a two-tone, yellow and white, with engravings (which had to be made per order), and he wanted a solid yellow gold one. So that's what we got after 5 years.
Yes, we can afford a lot more now... We might do something for our 25th anniversary (3 years away), but honestly, I really like the symbolism of the bands that we had to work hard to get. And they were the ones we really wanted.
IMHO, it just has to have real meaning and joy for the two of you.