Vintage Pioneer turntables are still very much in demand. I've got a very old Pioneer PL-A35, and it has served me well for decades.
However, if you are buying a used one, there can be one small problem; the anti-skate counter weight. This is a tiny little weight that hangs off the back of the tone arm to counter the cartridges natural tendency to 'skate' cross the record. IT IS SOOOO EASY, for this tiny little part to get lost or forgotten. Make sure if your potential turntable uses this type of anti-skate mechanism, that the weight is there, and is place in a large Zop-Lock bag for shipping.
You can get replacements weight, but to do that, you have to know the weight of the existing part. I think the weight on mine is about 1.3 grams. But most of the standard replacement weights default to about 5 grams.
Still, as I said, the Pioneer Turntables are still highly regarded and highly sought after. The motor, platter spindle, and the mechanisms do need to be oiled periodically.
AHHH...cancel that. I didn't recognize the Pioneer model number. The PL-990 is not a vintage turntable, but the current model available, and available at a dirt cheap price.
Photos and prices -
Pioneer PL-990 fully automatic turntable PL990
Pioneer PL-990 Turntable - Black: Amazon.co.uk: Electronics & Photo
This is a pretty marginal turntable, though I'm sure it will work. But this is not the turntable for someone interested in serious vinyl listening.
I think I would personally be more inclined to consider one of the ION turntables, or perhaps the Denon DP200USB or the Project Essential.
Domestic Turntables at Superfi Online - http://www.superfi.co.uk/index.cfm/page/category.cfm/Category/104
However, thought more money, it is hard to pass up the award winning quality of the Project Debut III (£220 typcial; (lowest price £171)). That is a turntable you can depend on.
Steve/bluewizard