Hi, Dturner,
Welcome to Sony Community!
These 2 distributors are the authorized parts distributors of Sony. Certain parts of Sony VAIO (and other Sony products) cannot be found in any other stores. You may try contacting Sony service center to check if they have the part/s that you need for your computer: https://esupport.sony.com/US/p/service.pl.
We still recommend waiting for the part from Encompass but we cannot guarantee that they will be available until the stated date. For updates regarding the stock availability, you may contact them again.
Best regards,
Vincent
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