Hmm.. That does not look bad to me at about $130, especially with a PASSIVE RIAA equalizer
You can judge only when you will make a comparison by yourself in your system with your cartridges. Even if someone will try to make it yourself (DIY) the cost of the high quality parts is more than $200 anyway.
The cheapest phono preamp i've been using for a long time was Grado PH-1 (can be find used for $350 max), i had two and modified them for a friend by replacing stock resistors with the best Naked Foil 100k ohms Vishay audio resistors. Pair of Vishay Naked Foil resistors cost me about $60 with shipping. People usually upgrade caps and it's also not cheap when it comes to the best caps. Even those RCA (mother) plugs on the back of any phono stage are not cheap when they are good.
So i have no idea how a good phono stage can cost $130 new ?