Both Ideal Poultry and Murray McMurray Hatchery have low shipping if you order 15 or more chicks. Have used both multiple times with no fatalities! One bonus of these places (& the one below), is you can order just one chick of multiple breeds, so you can order 15 of 15 different breeds which can be fun to do!
I also like Mt Healthy, and they allow small orders of 6ish with a slightly higher fee, and also send you one extra chick (something the same as you ordered, so if only pullets an extra pullet of one of the breds!)
I was very afraid to order in the mail, but this will be 4 years with many different hatcheries. Another idea is to find someone else local and order together. People I know now approach me to “add a couple” to my order every year, if they only want a handful! Finally, you could order a larger amount, see which ones you like when they get there, snd sell the extras on Craigslist or Facebook for the cost you paid.
Good luck!