PayPal Digital Goods

Has anyone worked with the PayPal for Digital Goods service?

Express Checkout: https://www.paypal.com/us/cgi-bin/?cmd=_product-go&product=additional_payment&signup_profile=dg https://merchant.paypal.com/cms_content/US/en_US/files/merchant/paypal_digital_goods-express_checkout_getting_started.pdf

Adaptive Payments: https://www.x.com/community/ppx/xspaces/digital_goods https://merchant.paypal.com/cms_content/US/en_US/files/merchant/paypal_digital_goods-adaptive_payments_getting_started.pdf

The pricing flexibility is what really interests me:

For each transaction we'll charge you either standard pricing, or micropayments pricing – whichever is the lower rate .

YOUR MONTHLY SALES (USD)** STANDARD PRICING
PER TRANSACTION MICROPAYMENT PRICING PER TRANSACTION

$0.01 USD - $3,000.00 USD 2.9% + $0.30 USD 5% + $0.05 USD
$3,000.01 USD - $10,000.00 USD 2.5% + $0.30 USD 5% + $0.05 USD
$10,000.01 USD - 100,000.00 USD 2.2% + $0.30 USD 5% + $0.05 USD
> 100,000.00 USD 1.9% + $0.30 USD 5% + $0.05 USD

I am trying to figure out how to implement in the Membership and MarketPress plugins. I don't know if this is something I can do myself or if it needs to be a feature request.