Whats better wheels out of these:

Hi all. I have been offered a set of SUN RINGLE RYDE XMB DISC 26''WHEELS for £50. is that a good price? You can see it in the pics below
I have also been offered a set of Specialized/Alex 26, for £50
These both have the cogs attached to them. The alex has 8 cog and the disks on the wheel but the SUN RINGLE has 9 cogs but no disk attached on the wheels, they have been taken off cause I got told there a bit rusty, however he still has them!
My bike is 21 gears, so that's 8 cogs. I don't think I could use a 9 cog, could I?
What wheel set is better quality out of the sun ringle and alex? I can also post pics of my bike as well if you like to see it:
SUN RINGLE RYDE XMB DISC 26''WHEELS


Specialized/Alex 26



Cheers
I have also been offered a set of Specialized/Alex 26, for £50
These both have the cogs attached to them. The alex has 8 cog and the disks on the wheel but the SUN RINGLE has 9 cogs but no disk attached on the wheels, they have been taken off cause I got told there a bit rusty, however he still has them!
My bike is 21 gears, so that's 8 cogs. I don't think I could use a 9 cog, could I?
What wheel set is better quality out of the sun ringle and alex? I can also post pics of my bike as well if you like to see it:
SUN RINGLE RYDE XMB DISC 26''WHEELS


Specialized/Alex 26



Cheers

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If you do have a 21 speed is your rear gearset a cassette or a freewheel, if it's a freewheel you'll need a cassette plus spacer.
Some of the Alex branded specialised wheels are phenominally heavy, I had one (rear) that weighed in at 1.25Kg!
Neither of those is a particularly good buy if it's just the wheels.
retired 9.6kg Carrera Kraken
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