Yes that’s what I’m worried about… I’ve just been browsing the forum and came across Blender Recommendations
It looks like a few other people use the same blender which I’m considering: https://www.amazon.co.uk/Breville-Personal-Smoothie-Portable-VBL239/dp/B00DGLUW4E/ref=zg_bs_3538289031_1?_encoding=UTF8&psc=1&refRID=3QMAVDA7Q5NP4S8MKY9B&th=1