Thank you spigiv@Gao Mujian It would be easier for everyone here if you explained a bit more. Which names do you need advice regarding for example? What advice do you seek? For specific names you want appraised there is an appraisal section here on NP. Explain a bit more which advice you are seeking and I am sure someone here will help
In general most xyz names (as with other domains) will not sell neither this year, nor the next (maybe the avg name will sell 1 in 100 over a year). So be clear if you are looking for liquidation options or advice around how to sell them retail as an example.
Thank you for your advice and guidance, thank you!Namebio.com - here you find recent sales on names in almost all extensions - best place to start
Check extension it is taken in on DotDB (many ext taken - probably a better name than if few taken)
Afternic (or other marketplaces) - check what similar names are listed for
And look through threads here on NP for newbies.