Hello omaggi,
If you are totally alone I would definately recommend a rehab facility after the surgery. I had family waiting for me and still went into rehab. The experience helped me tremendously learn how to do things for myself that we take forgranted, as well as how to take care of this new hip.
But back to the gadgets. I got mine in rehab. However there are many places that sell the "kits". Try the Arthritis Foundations website. I'll check to see if there's a link and send it to you. Also if you can't find somewhere locally, do a search on the itnernet under "hip replacement kits" and you'll come up with information. According to a magazine I got from the rehab hospital, the kit runs about $59.00. But usually you get the grabber, dressing stick, sock device, and the leg lifter, long handled shoe horn and some elastic laces.
But again...please consider rehab. Good Luck!!
Me again....I just checked the Arthritis Foundations webpage and they don't have any info on "gadgets". But...

I did a search on "hip replacement kits" and tons of sites came up. The prices vary, as do what's included. I didn't see the leg lifter included in the few I looked at. That may be a separate item. I kept that at my side constantly and it helped me get into our big suv also.
Bye again..............