need advice -> haggling

Hi guys! I really need advice since I finally stopped lowballing myself after getting certified (Canada based) and increased my prices slightly. I told a potential client that a set of medium gel-x with french tip is 60$ and I really think that's reasonable but she's trying to haggle for 50$… does this happen to anyone? What do you do about these DMs? I'm tempted to just not answer. With how long my sets take when I do such art and how much lower my prices were for these sets, I can barely afford materials. French tips are not easy, as many of us know. It's disheartening since I recently remade my price list and really thought it was fair. A box of Gel-X tips here is 50-60$, that alone. It's hard to make profit with those prices… I don't want to turn down clients since I only started doing nails 2 months ago.. help😭 I attached some of my work