I always walk in and show them their website on my phone and ask if lympa massage is included in this price, doing the universal hj sign emphatically. If they say, "yes," I say OK, if they so, "No" I go to the next store.
In these hard financial times, our hardworking chinese ladies know it's a buyer's market. Although they might miss out on the upsell by including it in the initial price, but the alternative means missing out on everything, including the base fee.
Be kind and polite, but show them you are willing to walk away, and they usually grab you by the arm, or by the crotch, and lead you to a room.