No-go at TaiDa unless you become a member (i.e. fork out a load of ca$h). If you’re prepared to drive, there some great courts (about 20) along the river in NeiHu (between MinSheng E and NanJing E roads, just across from the bridges). If you go on the weekend, you’ll have to wait a while, until the old buggers, kids and dogs vacate a court, but you will see girls playing tennis there (it seems to be a rare sight in Taiwan). If you go there in the morning, the main problem is deciding which oft eh 20 courts you want to use (i.e. the place is empty).
Oh, and it’s free…
There’s another place at the end of Civic Blvd (go through the underpass, turn left and drive a km up the road). There’s courts scattered around the place, including a couple under the freeway. But be warned, there’s a 100km/hr gust of wind that is guaranteed to keep you running after stray balls.
I bought a racket for a friend from a little tennis shop along ZhongShan Nth Rd, maybe near NanJing E Rd. It was a pretty reasonable price, plus the guy who works there also coaches at the courts along MinShenf East Rd (there’s some sort of centre there). The cost is reasonable - I think a couple of hundred for a couple of hours, but it might be hard to get a court in the evenings.