Forum:Lv mods question

I noticed a lv 40 mod that gives me 85%to sniper crit costs around $40k for example. I'm lv 53. I find a lv 51 mod that gives me 85% to sniper crit but it costs like 100k. Is it really better that my lv is closer to the level of the mod? Or is the price just THAT much more because its lv51?