are all used LPs dusty?


Hi.

I recently bought an turntable and listened to a record. I loved it and wanted to get more records. However, records that I bought off ebay or at record shops have a lot of dust on them. If the record doesn't have a scratch on it
they mark it as perfect although it might have a lot of dust on it.
1- Is this normal or should I be searching for records without dust on them?
2- What is the best way to deal with dust? Today, I just wiped a used LP with a towel. It made a lot of noise while I was playing but I still enjoyed it a lot.
3- Sometimes some records are shiny even if they have dust on them. Does this mean they are cleaner?

I have a technics TT , Cambridge Audio 840 A integrated amp and Audio Physic Evolution speakers.

Thanks
joecapar
Post removed 
Before using a record cleaning machine it is a good idea to let the record rotate while you use a dust/particulate matter remover such as the venerable Audioquest carbon fiber brush, or one of its competitors.
This picks up the dust, then you clean the brush by rotating it against its own built-in straight edge so the dust flies off the brush (pointed far away from the record you are cleaning.) Usually one needs to repeat this two or three times until you see that no more dust is visibly accumulating on the brush.
This removal of original record surface dust or fine particles prevents contaminating the edge on suction tubes of record cleaning machines such as the famous VPI 16.5
Some are not but it doesn't matter.

If you want good results with used records, you have to be prepared to clean them properly first. There is lots of info here on A'gon and elsewhere already regarding various effective ways to do this.

Otherwise, stay clear of used records in general. Its hard to tell by visual inspection if a record is really clean or not.
Generally yes. The paper sleeves have a tendency to crumble and that leads to dust. A lot of good tips on cleaning posted, but don't forget steam cleaning as the best answer.
I use one of these. I use a carbon fiber brush for touch up before playing.This system works good for me.