Getting pricing from config options

[sixfive]

I've a need to know the config option price on a product where it is charged based on a quantity. In our case it's number of seats @$9.40/seat/month. 

The Data Feeds return a $0 value for us, because the pricing table has no values https://docs.whmcs.com/system/data-feeds/#Product_Pricing_and_Currency so I am working through how to get this in our own module. 

What I have so far,  by passing in the productID is this: 

SELECT 
    tblproductconfigoptions.id AS configoptionid,
    tblproductconfigoptions.optionname,
    tblpricing.monthly AS monthly_price
FROM 
    tblproductconfigoptions
JOIN 
    tblproductconfiglinks ON tblproductconfigoptions.gid = tblproductconfiglinks.gid
JOIN 
    tblpricing ON tblproductconfigoptions.id = tblpricing.relid
WHERE 
    tblproductconfiglinks.pid = 62
    AND tblpricing.currency = 1
    AND tblpricing.type = 'configoptions';

This is returning 0 in monthly, because the rows returned are NOT the rows where I can see 9.40. 
 

When I look for the 9.40 monthly as follows

SELECT currency,id,relid,monthly FROM `tblpricing`
where monthly = 9.40;

It shows me the rows are actually id's that are very different, and the relid is nothing like what I am expecting. 

The relid = 17 on the admin UI (or cid) 

The naming matches on cid = 17 in tblproductconfigoptions (see the URL in the popup) 

But the pricing shows up in relid = 85

What's going on here?