Andrepolita, I own a Pioneer 300, and whilst I think its a fabulous aircraft and I know for a fact its capable of aerobatics
, it is not cleared to do so in the UK
I suspect (but confess I don't actually know) it will be the same in Holland.
Having said that, its not in the same aerobatic league as say a Pitts. On the other hand, its also a very comfortable and fast tourer - you couldn't say that about a Pitts!
If you're still interested in the Pioneer nonetheless, you can expect purchase cost of ~£50-60K, insurance of about £1500pa, Permit renewal ~£500pa, and maintenance costs of ~£200 pa (if you do it yourself, and assuming ~100 hours flown), ~£20/hour fuel cost. The other cost will be monthly hangarage and landing fees - no idea of rates in Holland!