Last time I payed about 14 or 15 USD incl. transport for Sierra 1N1FY, DW5808, MC7355 for replacing in one other device, depend update from up to 3G to up to 4G.
Thats is a 4G card which can run 50MBit up and 150 MBit download or like this.
I dont know about Mudi speed and you can replace or not.