Hachette still do them and in the most part, the GW ones are really good. I bought the whole run of the recent 40k one and it essentially worked out at two full armies at half-price, plus extras like paints, brushes and nice glossy lore magazines. Its not cheap, but its less expensive than buying the stuff as its sold in shops.
The thing is, D&D isn't THAT expensive compared to 40k stuff. So, if you are looking at even a low price of £7.99 per week for an issue, you're paying £32 per month for a load of disjointed gaming material* and some adventures. Surely, you would be better served just spending that money on the latest hardback D&D adventure book, if that's your thing? You're going to get WAAAAAAAY more bang for your buck that way.
* One of the 'features' of these magazines tends to be that the content is produced out of order, so you could have 'Elves' in #3, but have to wait for #24 for Halflings, half the L1 Cleric Spell List in #6 and the other half in #12 etc.