These tumblers are absolutely fine it’s the design that is not so perfect hence the big discount.
The errors on these designs are at the back of the tumblers and won’t even be noticeable, but me as the designer notices lol so grab a bargain x
PLEASE NOTE 
Postage must be purchased for these items.
1x tumbler = small postage 
2x tumbler = standard postage 
3 or more requires super postage x