I'm getting these at the start of next month. Mine will be engraved with Aniołku. They cost upwards of 1000PLN per pair. Ours will cost 1100PLN. There is flexibility in the colour scheme. My fiancee will chose white gold and I will choose pure gold to match my watch and my hair.
I always wore my ring on my right hand anyway. I had one when I was in secondary school.
the article in Polish about the very same thing (i.e. Polish wikipedia) gives a lot of examples where rings are worn on the right and where on the left hand
The mining of gold and diamonds are extremely damaging to the environment and the bosses of the major corporations that own the mines exploitative of the workers. I would recommend people who are buying wedding rings for their loved ones to ensure they request information from jewellers in Poland on the chain of custody (where the mine is and what are the working conditions; how the stone/mineral was produced and by whom; where they source their gold/diamonds in Europe; whether they have an independent auditing process for their supplies, etc.). Most won't know or have this info. for you in Poland, but you may deem it important enough to show them that there is a demand not just for luxury for your Polish loved one but also that the ring your partner is going to wear reflects your values as a person.
A good place to start researching is with retailers/fair trade gold campaigners Credjewellery as they are pioneers in establishing the Association for Responsible Mining] and work alongside the Fair Trade Labelling Organisation
In one who purchased an engagement/wedding ring from Cred recently I can vouch for their rings beauty, the efficiency of their service and the happiness my now fiancee had in finding out how much effort I put into researching this important symbol of love is as pure gold as it comes.
There is a Polish goldmine but dunno if the company that extract also manufacture and retail. Re. diamonds for Polish women, I'd say they'd be happy to know it is not only Kimberly process certified (ask the jeweller for their policy) but insist on the chain of custody.
And finally, I'd say it is traditional to shop around and barter the price down. Most jewellers will knock down he price once you show them you know what you are talking about. From my experiences in Ireland (dunno too much about Poland) jewellers can reduce the price by up to 20% if you negotiate well/plead relative poverty.
From that 20% you will be able to have an even nicer reception hall, band or honeymoon.