I just checked my logbook (yay LogTen and custom fields). 35 to RPL and 30 to PPL. 13 hours until solo. RPL was part time over two years and PPL over six months. As I said before about $12k for each plus as Glen said around another $5k for other stuff. Worth it, yep, just don’t tell the wife!
I think the main thing to ask yourself is why. If it is for a career option great. If for fun, like me, I know a bunch of people that got the RPL and spent all that money and then stopped. The reasons break down into a) struggling to get the money to keep going to PPL or b) lack of motivation or drive to keep going. I know for me personally being for fun, before getting PPL, you can only fly friends within 25nm for so long before the fun wears off. Therefore I see continued training as a driver and join an aero club for the fun and friends.