Price Check on Obby Maulers

How much is the most standard possible obby mauler worth?

1 attack
60 strength
1 defence
1 prayer
const pure from strength training

Also how much would one with upwards of 70 strength be worth.

And how much for an account with ~70 strength AND 55 slayer.

I currently made an obby mauler specifically for sale and I want to know if I should keep it at 60 and sell or if it'll be more profitable to sell at 70 str, 55 slayer, etc.

Thanks for your help!