In the summer of 2003 I sent out some email requesting quotes for crystal pairs for my Tekk KS-900, KS-960, and KS-1000. Here's what I got in return. I am sure this would be useful for those people using the Maxon DM-0515 and Maxon DM-0530 as well.

ICM (International Crystal Manufacturing)

From ceceliab@icmfg.com
Date: Wed, 13 Aug 2003 16:55:50 -0500
From: Cecelia Brown <ceceliab@icmfg.com>
To: xxxxx
Subject: Kenwood equipment

xxxx

All of the parts that you are requesting a price on are priced at $19.95
each.

This is for the KS1000,KS960,KS900.

Production time is two weeks. Please let me know if I can be of any
service.

Thank you

Cecelia Brown

ICM sales

JAN Crystals:

From sueb@jancrystals.com 
Date: Thu, 14 Aug 2003 10:14:53 -0400
From: "Sue Brick (JAN Crystals Sales)" <sueb@jancrystals.com>
To: xxxxxxxxxxxxx
Subject: Re: quote request

xxx,
I have info on the KS 900 & 960 (the crystals are the same) but I have no
info on the KS1000 so I do not know if they are the same.  If you have the
specs. for it, let me know what they are and we can mfg. them.  The cost is
$20.00 per crystal + s/h.  Standard production time is 3 weeks with
expediting available at an additional charge if you should need them sooner.
We accept Visa or MC.  Should you wish to phone, the number is 800 526 9825.
Thank you for the inquiry.
Regards,
Sue Brick, Sales Mgr.

Bomar Crystal:

From sales@bomarcrystal.com
Date: Thu, 14 Aug 2003 11:37:56 -0400
From: Bomar Crystal <sales@bomarcrystal.com>
To: xxxxxxx
Subject: Re: quote request

xxx:

I see information on the KS-960, but not the KS-1000 in our system.  If you
have the spec, let me know and I will see if we can manufacture.  Typically
these crystals are $15.00 each in 3 weeks, plus S/H and we accept CC for
payment.  Please note we do have a $50.00 minimum order.

Thanks,
Michael

West Crystal:

From wcrystal@shaw.ca 
Date: Thu, 14 Aug 2003 15:16:48 -0700
From: West Crystal <wcrystal@shaw.ca>
To: xxxxxxxxxxxxxxx
Subject: Re: quote request

Hello, xxx:

Thank you for taking the time to send us your question.

The price for the transmit and receive crystals for the Tekk KS-1000 radio
at 430.950 MHz is $16.95 each.  The price for the transmit and receive
crystals for the KS-960 and KS-900 is $15.95 each.

Production time for the crystals is 2 to 3 weeks.  If you need them sooner
than that we can process a rush order in about 6 business days.  If you
choose to have a rush order, a rush fee of 50% of the purchase price for
each crystal will apply to the invoice.  We accept payment by Visa,
MasterCard or by cheque in advance.

I hope that this information is of some help to you.  If you have any other
questions about our products please let us know.  We'll be happy to assist
you.

Beth
West Crystal Company

M H Electronics:

From ULTRAMEL@aol.com
Date: Fri, 15 Aug 2003 18:16:54 EDT
From: ULTRAMEL@aol.com
To: xxxxxxx
Subject: Re: MH Electronics Request for CUSTOM CRYSTAL Quote

Dear xxxx:

Thank you for your inquiry.  Before we can process an order for you we would 
need you to send us a good working sample of each crystal.  The crystals will 
be returned to you with your order.

The cost per crystal would be $15.00.
Shipping and handling would be $7.50 for the whole order.
Delivery is 3-4 Weeks to shipment

Take care
Tracey
M H Electronics
Phone toll free (USA only) (800) 643-9825
Phone (909) 989-1976
Fax (909) 945-4971