My lucky tab:
I also own all the other lucky TH items (silverhawk pet, gold cane, etc)
I would say it cost roughly ~$4,000 with a lot of dry streaks, in total about 800M cash earned from it (not much so no I did not pay2win since 800M is easy to get)
I have my 10-year cape and only did this to collect the TH rares, it did not benefit me in-game and I bought a majority of keys while there were no promotions going on so plz don't murder me with pay2win comments (even though you can't 'win' runescape)
P.S yes I am a loser