I voted for higher prices. I would assume that a proportion of society are able to negotiate for themselves wage rises each year of around inflation (2.73% is the last 10 year average) so while goods and services are getting more expensive, in theory so should your income be rising which negates this price increase.

Due to the nature of this wonderful thing called inflation, if we opted for smaller sizes to keep the same price point then the size of the toy will basically be ever decreasing as inflation rises until it was not viable to make any more.

Of course, keep in mind that this is all purely based on the assumption that the company in question is only putting up prices/decreaing product size to deal with inflation and to not increase their profit margin.