SUMMARY ORDER

Appellants appeal from judgments of the United States District Court for the Northern District of New York (Scullin, J.). All judgments discussed in this order arise from the same underlying charge of conspiracy to distribute cocaine and cocaine base in violation of 21 U.S.C. §§ 841(a), 846. Appellant Nix entered a guilty plea and was sentenced, in contested part, to 240 months’ imprisonment. Appellant Mingo was convicted following trial. This Court has jurisdiction to review both judgments under 28 U.S.C. § 1291. We assume the parties’ familiarity with the underlying facts, the procedural history, and the issues presented for review.

Appellant Nix challenges his sentence of 240 months as excessive. This challenge is without merit. We review sentencing decisions of lower courts under an abuse of discretion standard. United States v. Friedberg, 558 F.3d 131, 133 (2d Cir. 2009). We have reviewed Appellant Nix’s arguments for why he should be afforded a special downward departure in sentencing, but do not find them sufficient to warrant interference with the result below. Judge Scullin cannot be said to have abused his discretion in imposing the *725 statutorily required minimum sentence of 240 months. Accordingly, we affirm the sentence imposed on Appellant Nix.

Appellant Mingo challenges his conviction on two grounds. First, he contends that the evidence adduced at trial was insufficient to support conviction. Second, he claims that the district court erred in failing to deliver his preferred jury instruction concerning the so-called “buyer-seller exception” to the law of conspiracy. Both challenges are without merit.

In a sufficiency challenge, we review the evidence below in the light most favorable to the government, construing all permissible inferences in the government’s favor. United States v. Reyes, 157 F.3d 949, 955(2d Cir. 1998). Credibility determinations made by a jury must be respected and in ordinary circumstances must not be replaced by our own evaluations of the witness credibility. United States v. Autuori, 212 F.3d 105, 114 (2d Cir. 2000). Accordingly, we decline to usurp the jury’s role in determining credibility and conclude that the evidence presented at trial was sufficient as a matter of law to support conviction.

With respect to Appellant Mingo’s objection to the district court’s instruction on the “buyer-seller exception,” it is true that a buyer-seller relationship, without more, is insufficient to establish a conspiracy. United States v. Gore, 154 F.3d 34, 40 (2d Cir. 1998). However, while the fact of a buyer-seller relationship does not in itself establish that either party was a member of a conspiracy, such a relationship “does not insulate a buyer from a conspiracy charge ‘if the facts support such a charge.’ ” United States v. Rojas, 617 F.3d 669 (2d Cir. 2010) (quoting United States v. Parker, 554 F.3d 230, 232 (2d Cir. 2009)). Here, additional facts were adduced at trial beyond the existence of a buyer-seller relationship between Appellant Mingo and other members of the underlying conspiracy. Further, Judge Scullin properly instructed the jury that, while they might consider the existence of a buyer-seller relationship in determining whether the defendant entered into a conspiracy, such a relationship alone would not be sufficient to so determine. Cf Rojas, 617 F.3d at 675. Therefore, we find that the instruction given the jury was not in error.

For the foregoing reasons, the judgments of the district court are hereby AFFIRMED.