"too" here implies that you cannot afford it whereas the other case, you can afford it but didn't feel that the price is justified.

Thank you very much!

"too expensive" = excessively or unreasonably expensive. Example: The shoes were too expensive [for my budget], so I didn't buy them. "very expensive" = (almost) unreasonably expensive. Example 1: The shoes were very expensive, but they were very good quality, so I bought them. Example 2: The shoes were very expensive, so I didn't buy them. I might buy them later, if they go on sale.