Half speed masters. Are they worth the extra scratch?


I just purchased a Dire Straits Brothers in Arms half speed master. I'm using a Pioneer PL530 TT. Can this album be played successfully on my TT? I put it on 45 rpm but there is no way to tell if it is spinning at the right speed. The speed control is working but not keeping a steady reading like when I play a normal 33 record. It sounds good but I'm wondering if they should be played on a different table. Also is it worth it to pay extra money for these? I payed 50$ for this album. Thanks for any information.
knighttodd
If it is a half-speed mastered 45 then shouldn't it be played back at 22.5?
Like any other absolute question, it depends.

The tech makes me think of original R2R prerecordeds. They are fetching big $$ and they are crap.
Manufactured at double speed or worse.
That was funny MC, but... In general half speed masters do sound better, but I only have 33 rpm versions, no 45's. One 1/2 speed of Blondie Parallel Lines sounds worse the original Chrysalis version. MC would tell you to buy a $500 selected "white hot stamper" from Better Records. Not all of us can afford that unfortunately.
It's a 2 disc set done at Abbey Road with letter of certification. I will try the paper disc. I have it on 45 but the strobe I guess is only correct playing a 45. Maybe it's timeing is off a little for 45 rpm as it still moves a little at maximum set point. Spot on for 33/1/3. What cart is best for these records? 
Perhaps there is a problem with the turntable.  If that is the case, I wouldn’t buy expensive records to play on it.   A newer turntable may be a better bet in the long run.