You can pay a fair bit less I think (not sure of the price of HD, but going by what it said in a mag I read last month it was around £30) for a better wax.
Like Poorboy's Natty's paste wax. OK, so in terms of durability it's not upto much, but gives a lovely wet-looking finish for less than £15
Or for a similar price you've got Collinite 476s, which is about the most durable wax you can buy. Finish ain't bad either. Not exactly a wow-factor finish maybe, but you could always go over that with the Natty's and you can do that for less than £30! Or use the Collinite and splash out on a bottle of Zaino Z-8 Spray Sealant/QD, best on the market for £18 for use after wax!
£30 would near enough get you a nice Dodo Juice wax too!
Without having to step it up to the likes of Zymol...