Lymphodema is so daunting at first and I spent so much money on garments, some used and successful some not so much. With lots of different treatments, I found the blow up pump machines the absolute best, hired from my lymphoedema physio, I would watch TV, let the machine do it's magic, then wrap my arm.
I now pretty much have it under control and I use the comfiwave sleep compression every night and at this stage this is all I need. Even if my arm looks normal, I wear it religiously.
Another bit of advice, you can claim the cost of your garments from you Private Health Cover if you have it, not a lot but better than nothing.