Hi Hannu
From what you say I guess golf retailing especially on-line is less well developed in Finland than here or the States which creates a problem.
You could try
www.onlinegolf.co.uk who offer a try & replace 90 day deal (one go only unfortunately!) with reasonable postage to Finland (free if you spend enough!) a wide range of sticks and costs from £200 to £900 depending on your taste, including some reasonable mixed (ie. rescue &
irons) sets from Benross & Progen that are good value if you don't want a big name.
They also give advice (e.g for improvers, for 20+ for 10+ etc) on the site which could help you narrow down your choice - you can also ring and discuss the choices.