I wouldn't bother with it. That is the only time you need to really worry about really high end cables (in which case 25 dollars might be an ok price... but no HDMI cable is ever worth the 100 dollars that monster often tries to charge.)
You are correct that all you need to look for is a HDMI1.3a cable but you can get good 6 foot versions from amazon, blue jeans cable, or monoprice.com for 8-12 dollars.
Watch this clip on HDMI cables from HDNation for the lowdown:
what do you think of this hdmi cable? i can get it on ebay for a fraction of what best buy sells them for. i hear all the time as long as its 1.3 compatible then it will be fine. i just want to getthe best picture for my pn50b860 samsung plasma.
would you buy/trust the m1000hd hdmi off ebay for around $25?