Well obviously nothing current, but there are many vintage TTs out there that will spin at 78rpm, though you will have to buy used. Some examples:
Collaro 2020
Connoisseur BD3 and earlier:
EMT 927, 928, 930 and 938
Garrard 301 and 401
Goldring Lenco GL75
Goldring G88 and G99
Thorens 124 (both Mk.I and Mk.II) and 135
http://www.charm.rhul.ac.uk/history/p20_4_6.html