Hello everybody. First off I have a 50 watt fiber laser with a rotary. I got my machine about 2 months ago and have been doing just fine doing stainless and painted tumblers in low quantity. I can do a painted tumbler in about 3-5 minutes depending on size of logo. stainless annealing takes a bit longer. I usually charge $15-$20 dollars do to tumblers. Today I got an order for 300 tumblers to be engraved with a company logo and an American flag on the other side. they want me to buy the tumblers and do the engraving. I don't really know how to price the engraving and need some input from you guys. also where to fine r-tic or Ozark tumblers at a cheaper price when buying in bulk. I will try calling a few places but Walmart seems to be the cheapest so far. they need to be green painted tumblers because that is the fastest and easiest to do also the color they want. another thing is I know a lot of you say to use a co2 laser, but I don't have one haha. I also do laser welding. so I can make money while the cups are being engraved so I want to make as much money off of them as I can but I don't NEED to make a bunch of money off the tumblers if that makes sense.