Google is offering Gmail and Picasa Web Albums users the chance to purchase additional storage when they reach the limit of that the company supplies with its free services.

Google presently offers Gmail users 2.82GB of free storage with their account. Picasa users get 1GB of storage.

Now the company is offering up to 250GB of storage for a fee. The storage can be applied against Gmail and Picasa at the moment, and the company plans to make the extra storage count against its other services (Including Docs & Spreadsheets) in future.

Plans start at $20 per year for 6GB of space, rising to $500 per year for 250GB of online storage.