If you are DIY, always buy glass containers at Dollar Tree or Walmart to avoid costly shipping fees and breakage. Double check with your florist or rental company on prices as they may be cheaper and you don't have to find a home for them afterwards.
save-on-crafts.com 3 sizes cylinder vases $12 for one set, or $120 for 12 sets of 3 or 36 total. look also at richland and other varied size sets, some round, some shaped. Floating candles, they have LED ones and regular burning.
I'm doing the same thing, I almost bought the jars from Walmart for $125. I just happened to swing by the dollar tree today and they had the container and I got the white and gold candles from Hobby Lobby, they were on sale for 3.99 when I got them yesterday lol.