I looked at what was included in the low berths and see some places were features could be cut for an economy model without loss of capability. I present to you:
Advanced Low Berth (economy):
One of the differences between the basic and advanced low berths in the Robot Handbook were the addition of a cryobvath and vacuum protection. Removing those cuts KCr58.4 off the price and makes it only slightly more expensive than the basic model (+KCr2) and has no loss of revival capability from the Advanced Low Berth as presented. A literal no brainer to make the jump from the Basic model to the Advanced (economy).

Advanced Low Berth Plus (economy):
Same removal of cryobath and vacuum protection removes the same KCr58.4, dropping the price to KCr68. Not much of a price hike over the Basic model (KCr17) and just a bit less over the Advanced (economy) (KCr15).

Superior Low Berth (economy):
For this one, I removed the cryobath, vacuum protection, and the Vargr specific add-on. Savings: KCr68.4. At KCr72, it is only KCr21 more than a Basic unit. Less than a 50% price bump.

The Deluxe Low Berth (economy):
Here is where there is still a big price jump. Likely not something many folks will go for without a desire to provide premium service. They only save KCr50 and the cost is still high.

The Iridium Low Berth (economy):
Like the deluxe unit, it only saves KCr50 off a steep price. Very much for those who demand the best at any cost.

Let's
steal borrow
@swordtart's table and add the new entries.
The chart presented has standard and then basic without a discount. This is in error. The basic IS the standard. The two are one and the same. That means the discount is valid and the so it should be valid for the other models. The Advanced, for example, is presented in the book at the discounted price and so the build has to have that discount to match the published materials. So, the follow-on discounts (same rate as the advanced) are equally valid.
Now, to make this a comparison of apples to apples, I made the chart for both the undiscounted price (including the basic) and then again for the discounted price.
Opps. I have too many attachments. Look for the follow up post that details what I found and my take on it.