Az traveler,
The wireless Joey is $7.00. The second Hopper is $12.00. Both are billed on my home account. If you use a 211 receiver it is also $7.00. I purchased the equipment for the RV. I paid $125 for the Hopper. No, you don't need wifi.
I purchased the tripod and antenna from
https://www.tv4rv.com/sunshop/index....uct_detail&p=7.
I purchased a meter from Solid Signal,
https://www.solidsignal.com/pview.asp?p=satlooklite.
There might be better meter options for Dish as they changed the software/configuration. It is not as straight forward as it used to be but it still works. The advantage of the meter is that you can lock the signal at the dish without the use of the receiver. Makes setup a breeze.
Ken