fingerscrossed, we bath directly on the floor - i sit with the tub between my legs so that i am nice and close to her.
She now sits in it unaided, but when she was younger i needed to hold her head up a bit so need to be really close (now we just play )
If you can justify the stand go for it, but we decided against it and i dont regret it.

I tried finding 2nd hand tummy tubs but they sell for close to retail, thats why we ended up getting one new.

Honestly it is one of the best purchases we made