Customer Typed Variants

Hi Guys, im in the long process of starting up my site.  I offer a range of Custom items.  I know i can add a size variant but what i really NEED is to offer the option for the client to Type in custom text, as in a Name and age typr of deal.  How do i go about setting this up in my pages?

Also is there a way to Bulk edit prices?  or do i have to do it 1 by 1 :/