I ordered mine from QVC , I ploughed through Amazon, very mixed reviews and prices , some looked no more than a thick puffy throw TBH .
Costco have one ( about £55 ish)
I use a 4.5 duvet all year and just use a soft duvet cover+fitted sheet in winter , I would combust in a weighed blanket !
DD is the one who has fleece bedding from Hallowe'en 
IIRC the QVC bigger size 15lb weight was £79 but I got 3 x Easy Pay so cost split . And there's a 60 day Money Back Guarentee takes us to the first week November ........ok she'll probably have her blanket very early to try it out 
Glad you're improving Nero pains like that can make you feel actually sick , the searing sharp pain. Heat and topical gel and light movement .
I had sciatica in my left buttock once , after a long drive I was fine , next day went to put the bins out and aargh it was like someone had stabbed me with a skewer 
Walking improved it , sitting was worse pain. It gradually wore off but Oh! the pain .
I'm rustling up some lentil soup, cooking Sunday Dinner , doing washing and posting on MN .
Going to put a conditioning mask on my hair in a bit and walk about with a little clingfilm hat on
Multi-Tasker !