Errm I would say probably not. But that's just my experience with weaning ds.
I started weaning at about 5 and a half months and he hated pureed food and spoons so I left it till about 7 months and did a more mixed approach with baby led weaning finger foods and some purees. I gave him whatever we ate really. He's a great eater now (2 years) It would have been a big waste of money for me to buy a beaba. (Though I was quite tempted). Though if your ds takes well to purees it might be a better investment.
I bought an asda mini blender for about £5 and that was fine for making purees in the early days. I still use it for chopping onions and other veg. I also have a hand blender (also about £5) for doing soups.