I think you could do well with about any price if the copy can support. I paid Chris Vendilli $750 for a WSO he had and it was worth every penny.

Your WSO can have 3 goals.

List building

Make money

Building your brand

You can do 2 of the 3 things but it gets hard to do both unless you have 1 of the 3 already.

But before you set your price make sure you have a strong backend it place to make the most money possible.

My doing the $1 price you would end up with a nice list of people who are buyers.

But make sure your copy tells them why it's only $1.

Thanks
Charles