Before making your first price suggestion, I strongly recommend reading these rules:

https://forums.backpack.tf/topic/36705-rules-for-non-unusual-suggestions/

They helped me a lot in pricing, and they might help you too.

Note here that you need to prove the price by evidence (aka sales) instead of opinionated arguments that some may disagree with.

Here are two to get you started: (others you can find through getting bp premium)

https://backpack.tf/item/6394064829

https://backpack.tf/item/6699719184

I hope to see you resuggest with solid evidence of sales, and remember that you can't get a range off of one sale (or zero) :)