Need advice on marking up items

I've been selling stuff from Doba and EzDropship, I was wondering what would be the proper way of marking up the item, I just wanna do this as a hobby and not like a job... but I wanna make some money of course.

Have a look at these related posts in the Salehoo forum and see if they answer your questions. Good luck :)

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Personally and this is just me, I like to have anywhere from 100%-500% markup on items and I buy this way (negotiate) to make sure this happens....

If I can make 50% margin (double what you pay) I'm happy.