Here is an el cheapo with free Prime shipping. Reviews seem decent.
Robot Check
and
Robot Check
Continental Tour Rides are around $20 each with free shipping and no tax on Amazon, with Prime. Very solid reviews, and this would be a great all rounder size for your bike, and a real quality tire for the money.
http://www.amazon.com/Continental-To...ywords=26x1.75
Looks like there are a fair number of decent choices in the $20 or less range on Amazon.
FYI, I am running 26x2.0 street tires on my old 1998 Specialized Hardrock MTB. Perfect for urban bombing around. I think you can get those Panaracers in a 26x2 for $20 each. I'd be tempted to go that route. Basically an el cheapo pseudo fat tire bike.