Need a Price check

I just need a price check on one of my Chars
99 Fletching
1/70/1 (str)
20m Coins in bank

How much money USD can that be worth?

How about if I manage to raise slayer to 55 without getting magic/range too high(we all know that's RLY RLY HARD and TEDIOUS to do)

Can people just gimme opinions on how much it's worth?
Oh and the name is PERFECT for Obby pure, like absolutely fantastic!

so
99 fletching
20m in bank
70 str
1 def/prayer/atk

Price check pls:

As it is-$???
After spending a month to get Slayer Staff-$???
After Getting mith glove(a week of work)-$???
After Getting both the mith glove AND slayer staff-$???