You could have the glycol sent from Germany. Omikron have a lot of photo-chems available. (They don't ship dangerous goods to Sweden, but the glycol was OK. I recon the same shipping policies apply for Poland.)
The usual photo-chemicals are at: http://www.omikron-online.de/... while you have to search for "Polypropylenglycol" to find the glycol.
The normal anti-freeze used in cars does have a lot of unknown additives, which makes it not suitable for developers. But, while I havn't checked this myself yet, cattle farmers are said to use a clean Polypropylenglycol which they give their animals in small doses. I guess they can find it at a decent price. I will check this some day.