Aldi is a weird and wonderful shop where impulse buying a chainsaw when you were looking for some bread is a very real possibility. Lidl is the same, but Lidl also never stocked a 3D printer as far as I can recall. Aldi did just over 18 months ago, and now it seems they're back in stock for slightly less money.
The Balco 3D printer originally went on sale as an online exclusive back in November of 2017, for the princely sum of £300. Now it's back in stock, again as an online exclusive, for a slightly lower £250. So if you ever wanted a 3D printer, it might be worth picking one of these up before they fall out of stock again. Do you really want to wait another 19 months before you get another chance?
Yeah you could buy it straight from the manufacturer, but it's more expensive and you won't get a new one. Refurbished is basically new, but it's not the same, and you'd always know the difference. Unless you wouldn't, in which case take your time.
The printer itself comes with a special levelling wizard, a touch screen control pad, an SD card slot for loading in designs, and other fancy features. Like a heated bed for "improved filament adhesion". You won't need to worry about not being able to get more filament either, since Balco itself will sell you some. This isn't like Aldi and Lidl's electric toothbrushes that come with the annoying head attachment only they sell.
Delivery is free too. So what are you waiting for?