Does anyone know if the booking class/fare bucket affects the minimum amount for Plusgrade bids with LO?

I got another POZ-WAW-LHR round trip coming up in October and I noticed the minimum bids for WAW-LHR (O class Saver Eco) start at 145 EUR and 160 EUR for LHR-WAW (V class Standard Eco).

In the past I could easily get bids for around 100 EUR (or less) and I noticed that PlusGrade bids on LO have gone up in price significantly since the start of 2023.

While it is still 20+ days until travel, I expect this to go down (not much) but I am just curious if the fare bucket can affect the initial bidding value.