This is what the Museum Store Association says:

Mark-on:  Differences between cost price as billed (before cash
discounts) and retail price at which goods are sold (sometimes
incorrectly referred to as mark-up).

Mark-up:  Upward revision of initial mark-on resulting in
higher-than-original selling price.  Sometime incorrectly confused with
mark-on.

My thanks to the MSA.

Bonny Henderson, Project Manager, Retail & Merchandising, Museum of
Victoria, Melbourne, Australia
> ----------
> From:         Ross Weeks[SMTP:[log in to unmask]]
> Sent:         Wednesday, 13 August 1997 12:57 AM
> To:   [log in to unmask]
> Subject:      Re: Retail Markup (was Re: Glasgow Museums UK -Reply)
>
> Naw.  A 50% markup is "half again" the original price.  That is, 150%
> of
> the $5 is $7.50. The goal is to double the original price, i.e., 200%
> of $5
> is $10.
>
> ----------
> > From: Hodcarry <[log in to unmask]>
> > To: [log in to unmask]
> > Subject: Re: Retail Markup (was Re: Glasgow Museums UK -Reply)
> > Date: Monday, August 11, 1997 11:08 PM
> >
> > Actually doubling a price (cost $5 retail $10) is a  50% markup and
> is
> the
> > goal in many retail areas.
>