Hi Hemi,
I've had my eye on a 55/60 mm as well.
This Sky Rover 60ED appears identical to the AT60ED and is a little cheaper
https://www.aliexpress.com/item/SKY-...ceBeautifyAB=0
Also the Stellarvue SV60EDS is faster at f/5.5 and still available:
https://www.highpointscientific.com/...escope-sv60eds
The TS Photoline version is much more expensive for some reason:
http://www.apm-telescopes.de/en/tele...o-2-rp-focuser
This Sharpstar on Aliexpress appears identical to both the SV & TS and is alot cheaper:
https://www.aliexpress.com/item/SHAR...23753c00TltufL
They are all doublets with one FPL-53 element, but the TS is ~$760 AUD, the SV $635 and the SS $480 before shipping. Maybe the difference is in quality control and TS take the best lenses first?
Hopefully someone can enlighten us on the difference, if there is one.