Last night, i was at a show, and get to my car, start it up, and the coolant temp guage shoots to hott...well i think thats BS so i go feel the hoses and their cold...both top and bottom have fluid to i know the thermistat opened...so then i unplug the temp sensor, and my guage drops down to nothing...plug it back in and it goes to full hott...so i think my engine temp sensor took a **** on me...how much is that? i found one for 26.99 on autozones website? anything cheaper you think?

1991 acura integra