I had to revisit this post of yours just for clarification:
Dynadot pre-funding of accounts provides
8.75 rate for .COMs in all stages ( Registration, Renewal, and Transfer ). This they call BULK.
"Prepayments of $500.00 or more instantly qualifies you for our discounted bulk pricing."
Now there is something they call Super Bulk which is
"Prepayments of $5000.00 or more instantly qualifies you for our further discounted super bulk pricing."
The Super Bulk provides
8.50 rate for .COMs in all stages ( Registration, Renewal, and Transfer ).
Namepros members get
8.49 for all pricing regardless of pre-funding or not at Epik.
With that said, I am not sure if
@Dynadot gives you better deal than what
@Rob Monster Epik is providing to all members of Namepros which is 8.49 which if they do means they are giving you pricing that is outside the 3 layers they announce on their site , Regular, Bulk, and Super Bulk.
Of course there is the following too which some big portfolio owners might find interesting although the credit is not that much:
"
Prepayments from $10000.00 to $49999.99 paid by bank wire or check get a 1% credit bonus.
Prepayments for $50000.00 or more paid by bank wire or check get a 2% credit bonus. "
To get the prices for Bulk and Super Bulk of Dynadot, you would need to pre-fund the account,while at Epik to get 8.49 all you need is to be a Namepros member.
Source: https://www.dynadot.com/domain/com.html
I have many names in both places so these are the prices I see. I believe if Super Bulk gives you 8.50 then Epik gives 8.49 with no funding required from Namepros members. So I am not sure how Epik could not match such rates for COMs if you are getting Super Bulk prices.