I ordered the Will & Grace box set after much awaiting the 8th series to come out on DVD. I saved up and I have to say that buying the box set was completely and utterly worth every single penny. £136 (price at the time I bought it) is not too expensive and it is definitely cheaper than buying each individual season.
It is presented in a nice black box which opens at the front to reveal 25 smaller DVD cases, each with 2 DVD discs in them. Each DVD case has 8 episodes on it, 4 on each disc. There are 3 cases per season. It is nicely presented, in order, and the colours increase in intensity from pink to purple as you go from season 1 to 8 to the EXTRAS. The cases are also quite thin so you can take them with you wherever you go, although the whole box set is quite heavy.
The extras are amazing - bloopers, interviews, behind the scenes action, it's brilliant. And the box set contains EVERY SINGLE EPISODE ever made, I think it's well worth the buy.
Unlike the FRIENDS Box Set, the W&G box set labels each CD so you're always sure where it goes and whether the right disc is in the right place.
If you like W&G, definitely consider buying this.