Originally Posted by 7echo
About to remodel a similar sized bathroom and have asked one supply house this same question. They (counter helper) said approx. $12 to $15/sq. ft. That seems high, but I haven't done any more looking yet.
It about right for a low voltage cable system. A line voltage 'mat' should be about 15-20% less for a good one, both with digital progarmmable tstats.
There are lots of different brand mats out there. If you choose to go with line voltage, be very careful with it and monitor the system AS the tile is going in. Then test it immediately after to be sure the element hasn't been damaged. Damage to line voltage elements is next to impossible to find.
Most important with line voltage mats is don't over-buy. Buy what you need or a little less. NEVER cut or even nick the element and keep the spacing right.