Have you seen the forum on “Fishing and Tenkara?” Some good advice there.
You have probably read enough to know that Tenkara originated in Japan and really optimized for fishing small mountain creeks and streams. I have a had mix of luck fishing creeks as well as lakes here in the Rockies. I don’t always catch fish, but that isn’t always the point of fishing! I really like the light weight and simplicity of Tenkara and find the rods to be very easy to lash onto the side of a pack and just forget about it until I see a nice spot in the creek. I still sometimes take my ultralight spinning rig along, too, and it’s nice to be able to do both.
$110 for a Tenkara rod seems reasonable – I can’t read the Massdrop page so don’t know if that includes line, tippet, and flies, which can run you another $30. I have had excellent service and products from both Tenkarabum and Tenkarausa. There are other vendors that folks like.
As far as ease of learning, that is just something you will have to practice. There are some great online videos, but no substitute for just fishing. I won’t say Tenkara fishing technique is easy, but it is learnable, and the fish don’t care whether you are a master or a hack if they are hungry!