Best option for FBM shipping carrier? Mixed weight parcels.

Hello everyone,

I am looking for some recommendation, advices about postage carriers.

I use RM, Evri, UPS, and I found they're quite expensive in long run if you are pay the full price.

I started to looking for business account with them and I can't see any benefits to open a business account. (maybe wrong)

So the question is, how on earth can send a 20kg+ parcel with insurance and that price what customers will to pay. (included in the price)

(I found a few shops on Amazon whos selling only FBM products, with quite low price with shipping and the product weight more than 20kg?! If you count down the costs it's going to be minus ££s, and the products can't be buy cheaper than everyone else)

RM calculate an average weight for the shippings, and all my shipping range is from 64g to 25kg (20+kg not yet, but planning)

I have account with Packling and the RM Click and Drop.

I also worry about the A to Z guarantee claims, so I prefer to use a signature delivery with insurance.

(if you opened the RM business account, how strictly they monitoring your weekly parcels?)

Any thoughts welcome!

Thank you!