If i needed a monogram letter that's not too expensive in a weeks time, what's the best place to get that.  This is less of a need now, more for future knowledge.

Esty has them  but they are expensive, if you're up for a DIY version.......... the letters on my avatar were my first, all fondant and I used 3" cookie cutters. They were a rush job and I should have used gumpaste instead.  Since then I have found these links, with much better results.  HTH

http://forum.say7.info/topic56081.html

http://sweetnessandbite.com/2015/12/gum-paste-name-cake-topper-tutorial/