DVHS tapes come in DF240, DF300, DF360, DF420 and even DF480 lengths. To determine the number of minutes of HDTV recording time simply divide the DF number by two i.e. DF240s will record 2 hours of HDTV, DF300s will record 2 1/2 hours of HDTV etc. They are sold under multiple brand names; JVC, Panasonic, Fujifilm, Maxell and TDK although not all lengths are available from all manufacturers.
DF240s are about 7.25 to 8.25 USD each.
DF300s are about 8.50 to 10.25 USD each.
DF360s are about 9.50 to 10.75 USD each.
DF420s are about 21.75 to 27.25 USD each.
DF480s are about 43.75 to 53.75 USD each.
(All those prices include sales tax and are based on realistic [not wholesale] exchange rates).
Personally I am having huge success with JVC SVHS tapes; 2.25 USD for 120 minutes (i.e. = DF240) and 4.00 USD for 180 minutes (i.e. DF360) BUT certain DVHS recorders seem to not handle SVHS tapes well and certain brands seem to be problematic (I had bad luck trying cheap Fujifilm SVHS tapes before I found the even less expensive JVCs).