I recommend to not buy repro's go the emultation road.
You do have free ways of emulation wich aren's as good as the original but if you for example buy an ever drive flash cart wich costs between 70 - 150 $ you have acces to all games on original hardware. Furthermore It's a cardridge wich one puts in a console.
It's an easy way to get the real experience on original hardware for all games.
There is no difference compared to the original, buying lose repro's for 50 pop a piece is a big waste of money, there is nothing cool about having a repro of for example little samson just emulate or buy a flash cart for the true experience. Also way cheaper when one buys multiple repro's instead of one flash cart wich has acces to all games.
He wants to collect games with his daughter as an experience.
I think a kid is going to much prefer finding a repro cart in the local brick and mortar retro store, than logging on the roms.com and downloading a game.
I see your point but spending 50 each on expensive games.
Even when buying only 4 copies your in 200, while with an everdrive one purchase of 70 - 150 and your done depending on wich console with acces to all games.
Sure the beginning is some menu but otherwise the experience is exactly the same if not better. You can put every game on the cart to your liking and afterwards you have direct acces to those games.
I personally will never spend money on a repro cart, maybe on some translate if that's not already accesible with the everdrive wich it probably is already or certainly will be in the near future.
The only reason to buy lose repro's is that it looks nice, but remember It's personal It's not the same as having an original cart there is nothing cool about having a repro of an expensive game. Go big or go broke, I'd walk the emulator road and for the best experience a flash cart like the everdrive is highly recommended.
Just my opinion repro's are a waste of money, It looks nice but there are plenty of cheaper ways with the same results on original hardware.
Besides were only talking about the expensive games since the affordable ones can be collected for a decent price. There are plenty of cardridges that can be picked up by the kids.
Unfortunately there are people who scam with these and sell them as the original.
In deals one will not be hurt by repro's but when buying them for pretty much full price there are potential scammers who sell repro's as original.